* fix: use timing-safe comparison for CLI API token validation
Replace direct string comparison (===) with constant-time comparison
using crypto.timingSafeEqual to prevent timing attacks that could
leak information about the token character by character.
Affected locations:
- server/src/web/routes/auth.ts (accessToken validation)
- server/src/web/routes/cli.ts (bearer token middleware)
- server/src/socket/server.ts (socket.io /cli namespace auth)
* Update server/src/utils/crypto.ts
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---------
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
